P05-12 Objectively measured physical activity, chronic illness and health service utilisation - a latent class analysis of activity behaviours in older adults

Abstract Background Physical activity contributes to the prevention of chronic illness as well as promotion of physical and mental health, but most adults remain inactive. Chronic illness affects mainly middle aged and older adults, and very little objectively measured data on physical activity behaviours and associated health outcomes of this population is published. The aims of this study are to: 1. Objectively measure physical behaviour outcomes of adults participating in the Move for Life study; 2. Develop distinct activity profiles based on six behaviour variables; 3. Investigate whether health outcomes differ across the activity profiles. Methods Participants were Irish adults aged 50 years and older. Using the activPAL, objectively measured data were collected on average daily: light intensity physical activity (hours); moderate to vigorous intensity physical activity (minutes); step count; time in bed (hours); standing time (hours); and waking sedentary time (hours). Data were obtained on chronic illness and health service utilisation. Validated questionnaires were used to collect data on wellbeing, loneliness and social isolation. Hierarchical cluster analysis using squared Euclidian distance was used to cluster behaviours based on similarity, using SPSS version 26. Regression models explored associations between health outcomes and activity profiles, adjusted for age and sex. Results Data from 485 participants were analysed, and four activity profiles were identified: sedentary (n = 50, 10.3% of total), low active (n = 295, 60.8%), moderate active (111, 22.9%) and higher active (n = 29, 6%). We will present the differences across the activity profiles for chronic illnesses, multi-morbidity, health service utilisation and validated health tools, comparing to data from the Irish Longitudinal Study on Ageing (TILDA) and the English Longitudinal Study on Ageing (ELSA). Conclusions The use of physical activity behaviour clusters may identify people with multi-morbidity and higher utilisation of health services. These findings could be factored into the development of future targeted physical activity interventions.

to estimate the associations between change in physical activity patterns and mental health outcomes.

Results
In total, 585 boys (45%) and girls (55%), aged 13-14 years (baseline) from 34 schools around Stockholm, were included in the study. Between 2019-2021 there was a decrease in HRQoL (p > 0.001) and increase in psychosomatic problems (p > 0.001) among both boys and girls. There was a significant positive relationship between change in MVPA and change in HRQoL (b = 0.02, CI: 0.00, 0.05).

Conclusions
The results suggest that the COVID-19 pandemic has impaired the mental health of Swedish adolescents but increased physical activity was related to positive changes in the mental health outcome HRQoL.

Background
Physical activity contributes to the prevention of chronic illness as well as promotion of physical and mental health, but most adults remain inactive. Chronic illness affects mainly middle aged and older adults, and very little objectively measured data on physical activity behaviours and associated health outcomes of this population is published. The aims of this study are to: 1. Objectively measure physical behaviour outcomes of adults participating in the Move for Life study; 2. Develop distinct activity profiles based on six behaviour variables; 3. Investigate whether health outcomes differ across the activity profiles. Methods Participants were Irish adults aged 50 years and older. Using the activPAL, objectively measured data were collected on average daily: light intensity physical activity (hours); moderate to vigorous intensity physical activity (minutes); step count; time in bed (hours); standing time (hours); and waking sedentary time (hours). Data were obtained on chronic illness and health service utilisation. Validated questionnaires were used to collect data on wellbeing, loneliness and social isolation. Hierarchical cluster analysis using squared Euclidian distance was used to cluster behaviours based on similarity, using SPSS version 26. Regression models explored associations between health outcomes and activity profiles, adjusted for age and sex.

Results
Data from 485 participants were analysed, and four activity profiles were identified: sedentary (n = 50, 10.3% of total), low active (n = 295, 60.8%), moderate active (111, 22.9%) and higher active (n = 29, 6%). We will present the differences across the activity profiles for chronic illnesses, multimorbidity, health service utilisation and validated health tools, comparing to data from the Irish Longitudinal Study on Ageing (TILDA) and the English Longitudinal Study on Ageing (ELSA).

Conclusions
The use of physical activity behaviour clusters may identify people with multi-morbidity and higher utilisation of health services. These findings could be factored into the development of future targeted physical activity interventions.

Background
Workers with high occupational physical activity (OPA) experience higher risk of cardiovascular diseases (CVD) than sedentary workers. In an ageing workforce, greater proportions will be expected to have CVD, and pre-existing CVD are shown to increase vulnerability to exposure of high OPA. However, most of the epidemiological evidence is derived from male cohorts, excluding those with pre-existing CVD, and using clinically manifest disease outcomes that are prone to healthy worker selection bias. To address these limitations and to highlight whether pre-existing CVD indicate vulnerability, this study investigated the effects of OPA on pre-clinical asymptomatic progression of carotid artery intima-media thickness (IMT) among women. Methods Women participants (N = 905) of the population-based Kuopio Ischemic Heart Disease Study (KIHD) with data on OPA and IMT were included. Linear mixed models, stratified by pre-existing CVD, estimated the association between OPA and the IMT progression from baseline (1998-2001) through 8-years of follow-up.

Results
Non-stratified analysis showed the greatest 8-year IMT progressions by exposure to light standing or moderately heavy active work (both 0.13 mm). Stratified analysis on within group changes and total level of IMT showed exposure to light standing and moderately heavy active work to give the greatest 8-year IMT progressions, especially pronounced among normotensives and those with pre-existing stenosis or ischemic heart disease (IHD). Women with pre-existing CVD ended up with the greatest total IMT levels (sum of baseline and estimated 8-year IMT change), in spite of less 8-year IMT change than among women with out pre-existing CVD. This may be explained by their initial high IMT level, combined with a celling effect of the change. Conclusion Exposure to light standing work and moderately heavy active work was associated with accellerated progression of IMT, especially pronounced among normotensives or workers with pre-existing stenosis or IHD. The majority of the reported 8-0.1 Abstract citation ID: ckac095.081 P05-14 Effects of a 12-weeks aquatic fitness program in women with osteoarthritis Pedro Morouço 1 1 Polytechnic Institute of Leiria, Leiria, Portugal Corresponding author: pedro.morouco@ipleiria.pt

Background
As a major public health concern, there is a high association between aging and obesity, nutritional deficiencies and physical (in)activity. Thus, diseases related to cartilage are on the list of main concerns of the WHO, assuming the prevention of degeneration of articular cartilage as an important issue for which there are few effective solutions. It is imperative to find preventive strategies that can reduce the incidence of chronic osteoarthritis. Methods Eleven women (58.1AE3.3 years-old) diagnosed with knee osteoarthritis (KOA) enrolled in tri-weekly aquatic fitness 45' sessions, for 12 weeks. Taking advantage of the physical properties of the water for increasing the load, a gradual use of the extension of the levers was defined. The warm-up focused on body alignment, joint mobility and breathing. The fundamental part was based on exercises that combine the cardiorespiratory component with the strength component, promoting a superior range of motion. At the end of each session there was a progressive decrease in load, alternating body segments. Before and after the 12 weeks they performed the Senior Fitness Test, hand-grip strength and body measures. All participants were volunteer, informed consent was obtained and all procedures were in accordance to Helsinki Declaration. Sessions were instructed by a CSCS Õ .

Conclusions
Aquatic fitness induced extensive benefits in women conditioning, suggesting that this activity is able to promote an increase in life quality, even if KOA is diagnosed. This program